Response of Cumin (Cuminum cyminum L.) Ecotypes to Drought Stress during Germination Stage at Low Temperature
| Autor: | E Boroumand Rezazadeh, A Nezami, Z Khorasani, M Khajeh Hosseini |
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| Jazyk: | perština |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | پژوهشهای زراعی ایران, Vol 21, Iss 1, Pp 1-10 (2023) |
| Druh dokumentu: | article |
| ISSN: | 2008-1472 2423-3978 |
| DOI: | 10.22067/jcesc.2020.38273 |
| Popis: | Introduction Cumin is one of the most important medicinal plants in Iran and is widely used in food, health and beauty industries due to its antioxidant and antibacterial properties. Yield of some crops are higher in autumn planting compared to spring. However, low temperature and inappropriate distribution of precipitation are of factors affecting seedling emergence and establishment. So it seems that seeds with higher germination also have better emergence and establishment producing more vigorous seedlings in further growth stages. So, to success in autumn-planting of cumin, it is necessary to have ecotypes with appropriate and even emergence in low temperature and water restricted conditions. Since water is of high paramount importance in germination and lower water potentials lead to lower accessibility of water to seeds, the aim of this experiment was to study seed germination response of different cumin ecotypes to low water potentials.Materials and MethodsThis study was conducted to determine the germination of six cumin ecotypes under drought stress and low temperature conditions. Treatments comprised of six cumin ecotypes (Torbat-e-Heydarieh, Khaf, Sabzevar, Qaen, Quchan and RZ19) and seven water potentials (0, -1, -2, -3, -4, -5 and -6 bar) induced by PEG6000 solution according to Michel B. E. and Kaufmann (1973). Distilled water was used for control. Seeds were disinfected by sodium hypochlorite (10%) and fungicide and were rinsed with distilled water. 25 seeds were placed in each petri dish and were incubated in 13°C after PEG solution or distilled water was added. Germinated seeds were recorded daily and germination percentage and rate, plumule and radicle length was determined at the end of the incubation. Ecotype ranking was also performed to determine the most tolerant ecotypes to drought stress. Statistical analysis was done using MSTAT-C and LSD test was used for mean comparison.Results and DiscussionThis study results indicated that water potentials was significantly affected all studied traits (p |
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